A reminder that Democrats still need unions for campaign cash

"In the 2014 midterm elections, unions—the lifeblood of the Democratic Party—contributed about $65 million from their political-action committee, or PACs, to candidates, nearly all Democrats," Trottman writes. Including those direct donations, unions spent a total of $235 million on campaigns. For comparison, Democratic congressional candidates raised $736 million in that election, according to the Center for Responsive Politics. A fallout with labor would severely affect Democrats' ability to raise money.